more from Gottlob Frege

Single Idea 7728

[catalogued under 5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic]

Full Idea

Frege distinguished between asserting a proposition and expressing it, and he introduced the judgement stroke (a small vertical line, assertion) and the content stroke (a long horizontal line, expression) to represent them.

Gist of Idea

Frege has a judgement stroke (vertical, asserting or judging) and a content stroke (horizontal, expressing)


report of Gottlob Frege (Begriffsschrift [1879]) by Joan Weiner - Frege Ch.3

Book Reference

Weiner,Joan: 'Frege' [OUP 1999], p.31

A Reaction

There are also strokes for conditional and denial.